[01/13] nptl: Add NPTL cases for cancellation failures cases

Message ID 1444234995-9542-2-git-send-email-adhemerval.zanella@linaro.com
State New
Headers show

Commit Message

Adhemerval Zanella Oct. 7, 2015, 4:23 p.m.
This patch pthread cancellation tests to check for failures cases
wherer the syscall cancel wrapper should both set the error and
the errno values.

Tested on i686, x86_64, x32, powerpc64le, and aarch64.

	* nptl/tst-cancel26.c: New file.
	* nptl/tst-cancel27.c: Likewise.
---
 ChangeLog           |  6 +++++
 nptl/tst-cancel26.c | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++
 nptl/tst-cancel27.c | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 144 insertions(+)
 create mode 100644 nptl/tst-cancel26.c
 create mode 100644 nptl/tst-cancel27.c

Comments

Roland McGrath Oct. 7, 2015, 8:54 p.m. | #1
The top line of a new file should be a descriptive comment.  

New test cases should have clear comments describing exactly what they are
testing.  

Don't predeclare locals, just use C99 inline declarations.  

Make sure all lines are under 80 characters.

You sample errno in the local variable E but then test errno itself instead
of testing E.  As there are no other calls between sampling errno and using
its value in the argument to printf, there is no real need for the local.
But if you want to have the local, use it consistently.

Since these two cases have almost identical code, make one of them just
#include the other with a #define rather than duplicating all the code.

If these tests pass with the existing code, then send them separately so
it's clear they can safely go in before the whole patch series is reviewed.


Thanks,
Roland

Patch

diff --git a/ChangeLog b/ChangeLog
index e665153..75cd365 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,10 @@ 
 2015-10-07  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
+	    Phil Blundell <pb@pbcui.dot.net>
+
+	* nptl/tst-cancel26.c: New file.
+	* nptl/tst-cancel27.c: Likewise.
+
+2015-10-07  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
 
 	* sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S
 	* sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S
diff --git a/nptl/tst-cancel26.c b/nptl/tst-cancel26.c
new file mode 100644
index 0000000..9a370d0
--- /dev/null
+++ b/nptl/tst-cancel26.c
@@ -0,0 +1,68 @@ 
+/* Copyright (C) 2015 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+static void *
+tf (void *arg)
+{
+  int e, r;
+
+  errno = 0;
+
+  /* This is a cancellation point, but we should not be cancelled.  */
+  r = write (-1, 0, 0);
+  e = errno;
+
+  /* Check that the cancelling syscall wrapper has handled the error correctly.  */
+  if (r != -1 || errno != EBADF)
+    {
+      printf ("write returned %d, errno %d\n", r, e);
+      exit (1);
+    }
+
+  return NULL;
+}
+
+static int
+do_test (void)
+{
+  pthread_t th;
+
+  if (pthread_create (&th, NULL, tf, NULL) != 0)
+    {
+      puts ("create failed");
+      exit (1);
+    }
+
+  void *r;
+  if (pthread_join (th, &r) != 0)
+    {
+      puts ("join failed");
+      exit (1);
+    }
+
+  return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/nptl/tst-cancel27.c b/nptl/tst-cancel27.c
new file mode 100644
index 0000000..aee25c9
--- /dev/null
+++ b/nptl/tst-cancel27.c
@@ -0,0 +1,70 @@ 
+/* Copyright (C) 2015 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+static void *
+tf (void *arg)
+{
+  int e, r;
+
+  errno = 0;
+
+  pthread_setcancelstate (PTHREAD_CANCEL_DISABLE, NULL);
+
+  /* This is a cancellation point, but we should not be cancelled.  */
+  r = write (-1, 0, 0);
+  e = errno;
+
+  /* Check that the cancelling syscall wrapper has handled the error correctly.  */
+  if (r != -1 || errno != EBADF)
+    {
+      printf ("write returned %d, errno %d\n", r, e);
+      exit (1);
+    }
+
+  return NULL;
+}
+
+static int
+do_test (void)
+{
+  pthread_t th;
+
+  if (pthread_create (&th, NULL, tf, NULL) != 0)
+    {
+      puts ("create failed");
+      exit (1);
+    }
+
+  void *r;
+  if (pthread_join (th, &r) != 0)
+    {
+      puts ("join failed");
+      exit (1);
+    }
+
+  return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"